Probably, someday you get boored with your PC, and you decided to open folders in your C: drive. Somehow, you probable managed to open the windows system folders, that is “C:\Windows\System32″, and you see a lot of files, then you click it.

And you find that the file that you opened is not understood by Windows. “Understood” here means that your Windows does not know which program to be launched to open this kind of file. We can say that it has something wrong with your registry in your computer.

You may not realize it, but the overwhelming majority of problems with file extensions come from registry errors.

Another sample, maybe you install a new piece of software that becomes the default editor for a file format on your computer. When you uninstall that software, does it remember to change the default editor back to the previous software you were using? You guessed it, nope. This is just one of many ways that changes to your registry can make opening particular files difficult. With registry fixing software, though, you can clean up these errors in a heart beat.

If you need help to solve this kind of problem, just visit www.computerfileextensions.com.This website will give you advice and help to fix your file extension problem. They were founded in 2008 with the goal of putting together the most comprehensive resource for file extensions available on the web.